CA1098457A - Brake shoe - Google Patents
Brake shoeInfo
- Publication number
- CA1098457A CA1098457A CA343,602A CA343602A CA1098457A CA 1098457 A CA1098457 A CA 1098457A CA 343602 A CA343602 A CA 343602A CA 1098457 A CA1098457 A CA 1098457A
- Authority
- CA
- Canada
- Prior art keywords
- brake shoe
- brake
- web
- edges
- radially inner
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Landscapes
- Braking Arrangements (AREA)
Abstract
BRAKE SHOE
Abstract of the Disclosure A brake shoe structure which provides resiliency and increased lateral strength at at least one end of the table of a fabricated brake shoe. A portion of the web at that one end of the brake shoe is spaced inward from the radially inner surface of the table to provide a relief area to accommodate deformation of the table at that end of the brake shoe under dynamic braking conditions. The table at that end of the brake shoe extends longitudinally beyond the circumferential edge of the web where it is formed as a lip extending laterally across the table and radially inwardly to provide lateral strength to that end of the brake shoe table.
Abstract of the Disclosure A brake shoe structure which provides resiliency and increased lateral strength at at least one end of the table of a fabricated brake shoe. A portion of the web at that one end of the brake shoe is spaced inward from the radially inner surface of the table to provide a relief area to accommodate deformation of the table at that end of the brake shoe under dynamic braking conditions. The table at that end of the brake shoe extends longitudinally beyond the circumferential edge of the web where it is formed as a lip extending laterally across the table and radially inwardly to provide lateral strength to that end of the brake shoe table.
Description
` ~O"S~57
- 2 -BRA~E SHOE
Background of the Invention This application is a division of application Serial No.
310,237 filed August 29, 1978.
This invention relates to a brake mechanism for an automotive vehicle and more specifically to an improved fabricated brake shoe which is particularly useful in a brake mechanism employing floating brake shoes.
For purposes of this invention, floating brake shoes shall mean those brake shoes which when^assembled in a brake mechanism are actuated at one end and, although anchored at the other end to resist the brake torque, they are not fixedly anchored to the brake mechanism support, but are free to move or float relative to an abutment serving as the anchoring surface. The improved brake shoe of this invention is particuIarly useful in dual actuated brake mechanisms in which both brake shoes become leading brake shoes. One such brake mechanism is disclosed in U.S. Patent
Background of the Invention This application is a division of application Serial No.
310,237 filed August 29, 1978.
This invention relates to a brake mechanism for an automotive vehicle and more specifically to an improved fabricated brake shoe which is particularly useful in a brake mechanism employing floating brake shoes.
For purposes of this invention, floating brake shoes shall mean those brake shoes which when^assembled in a brake mechanism are actuated at one end and, although anchored at the other end to resist the brake torque, they are not fixedly anchored to the brake mechanism support, but are free to move or float relative to an abutment serving as the anchoring surface. The improved brake shoe of this invention is particuIarly useful in dual actuated brake mechanisms in which both brake shoes become leading brake shoes. One such brake mechanism is disclosed in U.S. Patent
3,269,492, which issued to F.T. Cox, et al, on August 30, 1966.
The fabricated brake shoes employed in that as well as other brake mechanisms are comprised of an elongate curved table which supports the friction lining and a web extending along a sub-stantial length of the inner surface of the table to reinforce the brake shoe table and provide means for mounting and moving the brake shoe. By the term "fabricated brake shoe," we mean a brake shoe in which the web is formed as a separate element and welded to the inner surface of the table. The brake shoe webs have commonly been dimensioned to extend from edge to edge across ; the full arcuate length of the table. This reinforces the arcuate length of the brake shoe and provides maximum support to the longitudinally spaced edges of the brake shoe table at the relatively high temperature and pressure generated under dynamic braking conditions.
The structure of the fabricated brake shoe of the present in-vention deviates from this practice and improves performance under dynamic braking conditions.
Summary of the Invention The present invention consists of a fabricated brake shoe comprising an elongate curved table having longitudinally spaced . .
.
. .
:,'''~' ' ~
~QC~8~;7 edges and a web secured to the radially inner surface of said table between said edges, and at least one of said edges being bent to form a lip extending laterally across said table and inward adjacent one end of said web.
In a preferred embodiment of the invention, the end of the web at the trailing edge of the brake shoe is spaced inward from the radially inner surface of the table to provide a relief space.
The provision of this relief space is a feature claimed ~ se in - the parent application referred to above.
In the improved brake shoe structure described herein the lip distributes the load laterally across the trailing edge of the table and, since the lip extends longitudinally beyond the trailing edge of the web, it also provides additional strength extending circumferentially in both directions away from the trailing edge of the web. The lip thus enhances both the circumferential and lateral strength of the brake shoe table adjacent the trailing edge of the web.
The invention also provides a brake assembly comprising a support, a pair of fabricated floating brake shoes slidably carried by said support, each brake shoe comprising an elongate curved table having longitudinally spaced edges and a web secured to the radially inner surface of said table between said edges, a brake drum mounted for rotation about said brake shoes, means for moving each brake shoe outward into frictional contact with said brake drum, means abutting one end of each said brake shoe web and pre-venting rotary movement of its respective brake shoe in response to friction contact with said brake drum, and a iip bent inwardly at said one end of each said brake shoe, each said lip being formed from a portion of its respective brake shoe table extending beyond said brake shoe web and t-raversing its respective brake table.
The above and other features and advantages of an embodiment of the invention will be apparent from the following description of such ernbodiment.
Brief D~s ription of t~he~Drawings In the drawings, wherein like reference numerals denote like parts;
Figure 1 is a side elevation of a brake assembly incorporating the present invention;
Figure 2 is a fragmentary view, partly in section and enlarged . ., 1~9~ 7
The fabricated brake shoes employed in that as well as other brake mechanisms are comprised of an elongate curved table which supports the friction lining and a web extending along a sub-stantial length of the inner surface of the table to reinforce the brake shoe table and provide means for mounting and moving the brake shoe. By the term "fabricated brake shoe," we mean a brake shoe in which the web is formed as a separate element and welded to the inner surface of the table. The brake shoe webs have commonly been dimensioned to extend from edge to edge across ; the full arcuate length of the table. This reinforces the arcuate length of the brake shoe and provides maximum support to the longitudinally spaced edges of the brake shoe table at the relatively high temperature and pressure generated under dynamic braking conditions.
The structure of the fabricated brake shoe of the present in-vention deviates from this practice and improves performance under dynamic braking conditions.
Summary of the Invention The present invention consists of a fabricated brake shoe comprising an elongate curved table having longitudinally spaced . .
.
. .
:,'''~' ' ~
~QC~8~;7 edges and a web secured to the radially inner surface of said table between said edges, and at least one of said edges being bent to form a lip extending laterally across said table and inward adjacent one end of said web.
In a preferred embodiment of the invention, the end of the web at the trailing edge of the brake shoe is spaced inward from the radially inner surface of the table to provide a relief space.
The provision of this relief space is a feature claimed ~ se in - the parent application referred to above.
In the improved brake shoe structure described herein the lip distributes the load laterally across the trailing edge of the table and, since the lip extends longitudinally beyond the trailing edge of the web, it also provides additional strength extending circumferentially in both directions away from the trailing edge of the web. The lip thus enhances both the circumferential and lateral strength of the brake shoe table adjacent the trailing edge of the web.
The invention also provides a brake assembly comprising a support, a pair of fabricated floating brake shoes slidably carried by said support, each brake shoe comprising an elongate curved table having longitudinally spaced edges and a web secured to the radially inner surface of said table between said edges, a brake drum mounted for rotation about said brake shoes, means for moving each brake shoe outward into frictional contact with said brake drum, means abutting one end of each said brake shoe web and pre-venting rotary movement of its respective brake shoe in response to friction contact with said brake drum, and a iip bent inwardly at said one end of each said brake shoe, each said lip being formed from a portion of its respective brake shoe table extending beyond said brake shoe web and t-raversing its respective brake table.
The above and other features and advantages of an embodiment of the invention will be apparent from the following description of such ernbodiment.
Brief D~s ription of t~he~Drawings In the drawings, wherein like reference numerals denote like parts;
Figure 1 is a side elevation of a brake assembly incorporating the present invention;
Figure 2 is a fragmentary view, partly in section and enlarged . ., 1~9~ 7
- 4 ~
showing portions of the brake assembly in Figure li Figure 3 is a ~iew taken along the line 3-3 of Figure 2.
- Descript`io~ `of t~e`Prefe`rr-d Embodiment -With reference to the drawings, there is shown a wedge actuated brake assembly generally designated by the numeral 10.
The brake assembly is supported on a spider 11 secured by a plurality of bolts 12 to a flange 14 which may be formed integrally with or welded to the axle housing 15. The brake actuating mechanisms are contained within and supported by the ~' .
: ., . . .
... .
;j .
~! "i3.
' -:s "'; ', ' ~' ' ' ':' .`',';' ' :' :' '.' ' ,: '' ~ .,- ~: :
'' ' . .' :, , ,. ~ , . :;, .', ., '' '-' ' :
,~ ,: , ' ' ` ~ ~ . :
lQ<~345~
actuator housings 16 and 18 formed integrally with the spider 11 .
As best shown in Figure 3, the actuator housing 16, which is identical to actuator housing 18, is provided with aligned cylindrical bores 19 and 20 which slidably support tappet assemblies 21 and 22 and an opening on the reverse side of the spider through which a brake actuating plunger extends. The inner end of the brake actuating plunger is formed as a wedge 24 and carries a roller mechanism 25. The roller mechanism 25 engages the inner ends of the tappet assemblies 21 and 22 and moves the tappet assemblies axially outward in the bores 19 and 20 in response to inward movement of the wedge 24. The tappet assembly 21 is comprised of an inner screw 26, a nut 28 and a ratchet mechanism for rotating the nut 28 relative to the screw 26 to automatically adjust the brake running clearance in response to wear. A star wheel 29 is integrally formed on the end of screw 26 and provides means for manually adjusting the brake clearance. The tappet assembly 22 may comprise a plunger fitted with a dust shield 23.
Corresponding components of the actuator housing 18 are identified by the same reference numerals as used in describing the components of actuator housing 16.
.
The brake assembly 10 includes a pair of fabricated brake shoes 30 slidably carried by the spider 11. Each brake shoe is comprised of an elongate curved table 31 and a web 3~ secured to the radially inner surface 32 of the table 31. A
substantial length of the radially outer edge 35 of the web is in abutment with and secured by welding to the inner surface 32 of the brake shoe table 31 and an end portion 36 of the web is spaced radially inward from the surface 32 of the table 31 to provide a relief 38 at the trailing edge 39 of the brake ; shoe. The web end portion 37 at the leading edge ~3 of the brake shoe may also be spaced inward from the table 31.
However, it is not considered necessary to provide a relief at the leading edge of the brake shoe since, as soon will become ;.
, 8~
f' apparent, the longitudinally spaced edges 39 and 43 of the brake shoe 30 are subject to different effects when the brake assembly is actuated.
The brake shoe tables 31 support friction lining 40 and are formed as a lip 41 at the trailing edge 39 of each brake shoe 30. The lip 41 of each brake shoe 30 extends inward adjacent the end portion 36 of the brake shoe web and, as best shown by Figure 3, extends laterally across the full width of the brake shoe table 31.
The brake shoe webs 34 are slidably guided by spring clips 42 secured to the spider 11. The opposite ends of the brake shoe webs are biased into contact with the ends of the tappet assemblies extending from the actuator housings 15 and 18 by a pair of return springs 44. The actuator housings 16 and 18 are each disposed bet~een adjacent ends of the brake shoe webs 34 and, when the brake assembly is actuated, the wedges 24 move into the actuator housings 16 and 18 and drive the tappet assemblies 21 and 22 outward in their respective bores. The tappet assemblies move the brake shoes 30 outward 2~ until the friction lining 40 contacts a cylindrical friction surface of a brake drum 45 secured to a wheel, not shown, but mounted for rotation about the brake shoes 30 and axle housing 15 .
As the friction lining contacts the friction surface of the brake drum, the torque tends to move the brake shoes 30 in the same direction the drum is rotating. Thus, if the brake drum 45 is rotating counterclockwise, as indicated by the arrow in Figure 1, frictional contact between the friction ~; lining 40 and the brake drum 45 tends to move each of the brake shoes 30 in a counterclockwise direction and the tappet assemblies 22 serve as abutments anchoring that end, i.e., the trailing edges 39 of each brake shoe, to resist the friction induced torque.
~98457 Aithough the tappet assemblies 22 anchor the trailing edges 39 of the brake shoes 30, as best shown by Figure 3, the trailing edges of the brake shoes are not fixedly anchored to the tappet assemblies 22. The ends 3O of the brake shoe webs 34 at the trailing edges of the brake shoes are free to slide outward on the inclined abutting sur~aces of the tappet assemblies 22.
The trailing edges of the brake shoes 30 are slidably anchored in areas of the brake assembly where the brake drum is subject to significant distortion under dynamic braking conditions. Although the brake drum 45 is shown in Figure 1 to be circular and concentric with tbe brake shoe tables 31, when the brake assembly is actuated, the Qressure applied by the tappet assemblies 21 and 22 and the temperature generated by frictional contact with the brake lining 40 causes the brake drum 45 to distend in the vertical direction relative to the orientation of Figure 1. The brake drum 45 contracts in the horizontal direction and, as represented by phantom lines in Figure 3, moves toward the actuator housings. Thus the configuration of the brake assembly 10, as shown by Figures 1 - and 3, undergoes significant dimensional changes under dynamic braking as the anchor ends 36 of the brake shoe webs slide outward toward a contracting section of the brake drum 45.
The relief 38 provided between the end portion 3~ of the ``
brake shoe web 34 and the brake shoe table 41 permits the ` trailing edge 39 of the brake shoe table to move inward toward the ~eb and accommodate the dimensionally changing configuration of the brake assembly under dynamic braking ` conditions. This reduces the pressure level at the trailing edge of the brake shoe. The lip transversing the brake shoe table 31 structurally reinforces the unsupported trailing edge of the brake shoe and distributes the remaining pressure across the width of the brake shoe table to prevent lateral distortion under dynamic braking conditions.
.
1(3198~L~i;7 The brake shoe structure of the present invention provides for more uniform wear of the friction lining material and minimizes undesirable vibration by avoiding the hish localized pressure previously encountered at the trailing edge of the brake shoe.
The relief may be provided to conventional brake shoes by cutting or sawing a portion of the web away at the trailing edge of the brake shoe. However, it is preferred to form a major portion of the outer edge of the brake shoe web to the same radius of curvature as the inner surface of the brake shoe table and to blend that radius into a smaller radius of curvature at the trailing edge of the brake shoe web. The smaller radius is preferably selected to enable the end portion of the brake shoe web to support the trailing edge of the brake shoe table after the trailing edge has been deflected inward under synamic braking conditions.
Significantly improved performance has been achieved in tests conducted on a 15-1/2 inch nominal diameter brake assembly of the type shown in Figure 1 by utilizing brake shoes having tables formed from a highly ductile, .179 inch thick by 8 inches wide by 16 inches long SAE No. 1020 steel sheet. The inner surface of the brake shoe tables and the outer edge of the brake shoe webs formed to a radius of about 7-1/4 inches and a radius of about 7 inches was blended for an arcuate distance of about one inch at the trailing edge of each brake shoe web. The radii forming the outer edge of the brake shoe webs were off-set to provide a wedge-shaped relief about one inch long and increasing from a gap of zero to about - .075 inches at the trailing edge of the brake shoe.
The invention may be embodied in other forms without departing from the spirit or essential characteristics thereof. The foregoing description is, therefore, to be considered as illustrative and non-restrictive, the scope of the invention being defined by the appended claims and all 34~7 g ,_ changes to the described embodiment which co~e within the meaning and range of equivalency of the claims are therefore intended to be embraced thereby.
showing portions of the brake assembly in Figure li Figure 3 is a ~iew taken along the line 3-3 of Figure 2.
- Descript`io~ `of t~e`Prefe`rr-d Embodiment -With reference to the drawings, there is shown a wedge actuated brake assembly generally designated by the numeral 10.
The brake assembly is supported on a spider 11 secured by a plurality of bolts 12 to a flange 14 which may be formed integrally with or welded to the axle housing 15. The brake actuating mechanisms are contained within and supported by the ~' .
: ., . . .
... .
;j .
~! "i3.
' -:s "'; ', ' ~' ' ' ':' .`',';' ' :' :' '.' ' ,: '' ~ .,- ~: :
'' ' . .' :, , ,. ~ , . :;, .', ., '' '-' ' :
,~ ,: , ' ' ` ~ ~ . :
lQ<~345~
actuator housings 16 and 18 formed integrally with the spider 11 .
As best shown in Figure 3, the actuator housing 16, which is identical to actuator housing 18, is provided with aligned cylindrical bores 19 and 20 which slidably support tappet assemblies 21 and 22 and an opening on the reverse side of the spider through which a brake actuating plunger extends. The inner end of the brake actuating plunger is formed as a wedge 24 and carries a roller mechanism 25. The roller mechanism 25 engages the inner ends of the tappet assemblies 21 and 22 and moves the tappet assemblies axially outward in the bores 19 and 20 in response to inward movement of the wedge 24. The tappet assembly 21 is comprised of an inner screw 26, a nut 28 and a ratchet mechanism for rotating the nut 28 relative to the screw 26 to automatically adjust the brake running clearance in response to wear. A star wheel 29 is integrally formed on the end of screw 26 and provides means for manually adjusting the brake clearance. The tappet assembly 22 may comprise a plunger fitted with a dust shield 23.
Corresponding components of the actuator housing 18 are identified by the same reference numerals as used in describing the components of actuator housing 16.
.
The brake assembly 10 includes a pair of fabricated brake shoes 30 slidably carried by the spider 11. Each brake shoe is comprised of an elongate curved table 31 and a web 3~ secured to the radially inner surface 32 of the table 31. A
substantial length of the radially outer edge 35 of the web is in abutment with and secured by welding to the inner surface 32 of the brake shoe table 31 and an end portion 36 of the web is spaced radially inward from the surface 32 of the table 31 to provide a relief 38 at the trailing edge 39 of the brake ; shoe. The web end portion 37 at the leading edge ~3 of the brake shoe may also be spaced inward from the table 31.
However, it is not considered necessary to provide a relief at the leading edge of the brake shoe since, as soon will become ;.
, 8~
f' apparent, the longitudinally spaced edges 39 and 43 of the brake shoe 30 are subject to different effects when the brake assembly is actuated.
The brake shoe tables 31 support friction lining 40 and are formed as a lip 41 at the trailing edge 39 of each brake shoe 30. The lip 41 of each brake shoe 30 extends inward adjacent the end portion 36 of the brake shoe web and, as best shown by Figure 3, extends laterally across the full width of the brake shoe table 31.
The brake shoe webs 34 are slidably guided by spring clips 42 secured to the spider 11. The opposite ends of the brake shoe webs are biased into contact with the ends of the tappet assemblies extending from the actuator housings 15 and 18 by a pair of return springs 44. The actuator housings 16 and 18 are each disposed bet~een adjacent ends of the brake shoe webs 34 and, when the brake assembly is actuated, the wedges 24 move into the actuator housings 16 and 18 and drive the tappet assemblies 21 and 22 outward in their respective bores. The tappet assemblies move the brake shoes 30 outward 2~ until the friction lining 40 contacts a cylindrical friction surface of a brake drum 45 secured to a wheel, not shown, but mounted for rotation about the brake shoes 30 and axle housing 15 .
As the friction lining contacts the friction surface of the brake drum, the torque tends to move the brake shoes 30 in the same direction the drum is rotating. Thus, if the brake drum 45 is rotating counterclockwise, as indicated by the arrow in Figure 1, frictional contact between the friction ~; lining 40 and the brake drum 45 tends to move each of the brake shoes 30 in a counterclockwise direction and the tappet assemblies 22 serve as abutments anchoring that end, i.e., the trailing edges 39 of each brake shoe, to resist the friction induced torque.
~98457 Aithough the tappet assemblies 22 anchor the trailing edges 39 of the brake shoes 30, as best shown by Figure 3, the trailing edges of the brake shoes are not fixedly anchored to the tappet assemblies 22. The ends 3O of the brake shoe webs 34 at the trailing edges of the brake shoes are free to slide outward on the inclined abutting sur~aces of the tappet assemblies 22.
The trailing edges of the brake shoes 30 are slidably anchored in areas of the brake assembly where the brake drum is subject to significant distortion under dynamic braking conditions. Although the brake drum 45 is shown in Figure 1 to be circular and concentric with tbe brake shoe tables 31, when the brake assembly is actuated, the Qressure applied by the tappet assemblies 21 and 22 and the temperature generated by frictional contact with the brake lining 40 causes the brake drum 45 to distend in the vertical direction relative to the orientation of Figure 1. The brake drum 45 contracts in the horizontal direction and, as represented by phantom lines in Figure 3, moves toward the actuator housings. Thus the configuration of the brake assembly 10, as shown by Figures 1 - and 3, undergoes significant dimensional changes under dynamic braking as the anchor ends 36 of the brake shoe webs slide outward toward a contracting section of the brake drum 45.
The relief 38 provided between the end portion 3~ of the ``
brake shoe web 34 and the brake shoe table 41 permits the ` trailing edge 39 of the brake shoe table to move inward toward the ~eb and accommodate the dimensionally changing configuration of the brake assembly under dynamic braking ` conditions. This reduces the pressure level at the trailing edge of the brake shoe. The lip transversing the brake shoe table 31 structurally reinforces the unsupported trailing edge of the brake shoe and distributes the remaining pressure across the width of the brake shoe table to prevent lateral distortion under dynamic braking conditions.
.
1(3198~L~i;7 The brake shoe structure of the present invention provides for more uniform wear of the friction lining material and minimizes undesirable vibration by avoiding the hish localized pressure previously encountered at the trailing edge of the brake shoe.
The relief may be provided to conventional brake shoes by cutting or sawing a portion of the web away at the trailing edge of the brake shoe. However, it is preferred to form a major portion of the outer edge of the brake shoe web to the same radius of curvature as the inner surface of the brake shoe table and to blend that radius into a smaller radius of curvature at the trailing edge of the brake shoe web. The smaller radius is preferably selected to enable the end portion of the brake shoe web to support the trailing edge of the brake shoe table after the trailing edge has been deflected inward under synamic braking conditions.
Significantly improved performance has been achieved in tests conducted on a 15-1/2 inch nominal diameter brake assembly of the type shown in Figure 1 by utilizing brake shoes having tables formed from a highly ductile, .179 inch thick by 8 inches wide by 16 inches long SAE No. 1020 steel sheet. The inner surface of the brake shoe tables and the outer edge of the brake shoe webs formed to a radius of about 7-1/4 inches and a radius of about 7 inches was blended for an arcuate distance of about one inch at the trailing edge of each brake shoe web. The radii forming the outer edge of the brake shoe webs were off-set to provide a wedge-shaped relief about one inch long and increasing from a gap of zero to about - .075 inches at the trailing edge of the brake shoe.
The invention may be embodied in other forms without departing from the spirit or essential characteristics thereof. The foregoing description is, therefore, to be considered as illustrative and non-restrictive, the scope of the invention being defined by the appended claims and all 34~7 g ,_ changes to the described embodiment which co~e within the meaning and range of equivalency of the claims are therefore intended to be embraced thereby.
Claims (5)
1. A fabricated brake shoe comprising an elongate curved table having longitudinally spaced edges and a web secured to the radially inner surface of said table between said edges, and at least one of said edges being bent to form a lip ex-tending laterally across said table and inward adjacent one end of said web.
2. A fabricated brake shoe comprising an elongate curved table and a single web secured substantially centrally along a sub-stantial length of the radially inner surface of said table, at least one edge of said table extending longitudinally beyond one end of said web being bent inward to form a lip traversing said table and structurally reinforces said edge portion of said table.
3. A brake shoe as defined in claim 1 or 2, wherein a portion of the radially outer edge of said one end of said web is spaced in-ward from the radially inner surface of said table to provide a relief permitting the corresponding end of said table to deflect inwardly.
4. A brake assembly comprising a support, a pair of fabricated floating brake shoes slidably carried by said support, each brake shoe comprising an elongate curved table having longitudinally spaced edges and a web secured to the radially inner surface of said table between said edges, a brake drum mounted for rotation about said brake shoes, means for moving each brake shoe outward into frictional contact with said brake drum, means abutting one end of each said brake shoe web and pre-venting rotary movement of its respective brake shoe in response to friction contact with said brake drum, and a lip bent inwardly at said one end of each said brake shoe, each said lip being formed from a portion of its respective brake shoe table extending beyond said brake shoe web and traversing its respective brake table.
5. The brake assembly defined by claim 4 wherein a portion of the radially outer edge of said one end of each brake shoe web is spaced inward from said radially inner surface of said table to provide a relief permitting the corresponding end of said table to deflect inwardly.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA343,602A CA1098457A (en) | 1977-10-20 | 1980-01-14 | Brake shoe |
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US844,06 | 1977-10-20 | ||
| US05/844,096 US4209084A (en) | 1977-10-20 | 1977-10-20 | Brake shoe |
| CA310,237A CA1092992A (en) | 1977-10-20 | 1978-08-29 | Brake shoe |
| CA343,602A CA1098457A (en) | 1977-10-20 | 1980-01-14 | Brake shoe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1098457A true CA1098457A (en) | 1981-03-31 |
Family
ID=27165830
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA343,602A Expired CA1098457A (en) | 1977-10-20 | 1980-01-14 | Brake shoe |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA1098457A (en) |
-
1980
- 1980-01-14 CA CA343,602A patent/CA1098457A/en not_active Expired
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US6223866B1 (en) | Damped pad spring for use in a disc brake assembly | |
| US6345701B1 (en) | Anchor bracket and brake shoe assembly for use in a disc brake assembly | |
| US4476968A (en) | Expanding shoe drum brake | |
| GB2300889A (en) | A disc brake for parking | |
| US11149811B2 (en) | Brake clip for disc brake assembly and disc brake assembly including such a brake clip | |
| JPH0156287B2 (en) | ||
| JPH0330734B2 (en) | ||
| KR100471910B1 (en) | Multiple disk brake system with integrated parking brake | |
| CA1254845A (en) | Vehicle brake support | |
| JPS6054533B2 (en) | Floating caliper type disc brake | |
| US20190003538A1 (en) | Brake clip for disc brake assembly and disc brake assembly including such a brake clip | |
| JP2006512550A (en) | High friction brake shoe assembly | |
| CA1092992A (en) | Brake shoe | |
| US2764261A (en) | Brake disc retainer | |
| US6367598B1 (en) | Rotor for disc brake assembly | |
| US5562187A (en) | Guide pin for a sliding caliper disc brake | |
| CA1098457A (en) | Brake shoe | |
| US5323882A (en) | Disc brake friction pad assembly | |
| US20090145702A1 (en) | Brake pad for a vehicle disc brake assembly | |
| EP1012017A2 (en) | Caliper for disc brake assembly | |
| US6234284B1 (en) | Friction pad for a disc brake assembly | |
| US4418798A (en) | Disc brake with wedge pins | |
| US4043433A (en) | Caliper brake slider support | |
| WO1998006608A2 (en) | Electro-mechanical actuation mechanism for disc brake assembly | |
| JPH0228737B2 (en) |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKEX | Expiry |